Fig. 3: Performance characterizations of CsPbI2Br films and solar cells. | Nature Communications

Fig. 3: Performance characterizations of CsPbI2Br films and solar cells.

From: Surface chelation of cesium halide perovskite by dithiocarbamate for efficient and stable solar cells

Fig. 3

a, b Steady-state PL and TRPL spectra, respectively, of the pristine (blue) and chelated (orange) CsPbI2Br film deposited on glass substrate. c Plots of light intensity dependent VOC of the pristine (blue) and chelated (orange) CsPbI2Br devices. d tDOS of the pristine (blue) and chelated (orange) CsPbI2Br devices extracted from thermal admittance spectroscopy. e Nyquist plots of the pristine (blue) and chelated (orange) CsPbI2Br devices under dark with a bias voltage of 1.0 V. f Dependence of Rrec on applied bias voltage for pristine (blue) and chelated (orange) CsPbI2Br device. Rrec was obtained by fitting the EIS spectra at different voltages.

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